package model;

import com.mysql.jdbc.jdbc2.optional.MysqlDataSource;

import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class DBUtil {
    private static final String URL="jdbc:mysql://127.0.0.1:3306/BlogSystem?serverTimezone=GMT&allowPublicKeyRetrieval=true&useSSL=false&characterEncoding=utf8";
    private static final String USERNAME="zhang";
    private static final String PASSWORD="xijie9401";

    private static DataSource dataSource=new MysqlDataSource();
    static {
        ((MysqlDataSource)dataSource).setURL(URL);
        ((MysqlDataSource)dataSource).setUser(USERNAME);
        ((MysqlDataSource)dataSource).setPassword(PASSWORD);
    }

    public static Connection getConnection() throws SQLException {
        return dataSource.getConnection();
    }

    public static void close(Connection connection, PreparedStatement statement, ResultSet resultSet){
        if(resultSet!=null){
            try {
                resultSet.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
        if(statement!=null){
            try {
                statement.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
        if(connection!=null){
            try {
                connection.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }

}
